High-voltage bushing device



March 21, 1933.

Fig. l.

G. A. BURR HIGH VOLTAGE BUSHING DEVICE Filed Feb. 6, 1929 Si? sj /0 'z'S m l |N`vENToR Gordon ABZ/7V.

A'TTORNEY bushing 2 and the connector 10, the lead 12 being extended downwardly from the cylinder 14 to a position entirely under the shield 4. This structure differs from structures heretofore suggested in which a tap lead similar to tended laterally directly from the cylinder neet the lead 12 14 or through the shield 4 or like member. In suchprior structures,

opening `in the 'porcelain member is required and also, since the cooperating terminal, which extends outwardly from the terminal 10, is required to be armored, the flashover value of the bushing is materially lowered.

The connector 10 lcomprises a main body portion 15 of insulating material in whic a conducting socket terminal 16 for the conductor or tap lead 12 is imbedded. A metal sleeve member 17 isl disposed around the member 15 and is adapted for attachment to the tubular portion 8, as by thread inner-end portion 19. A collar member 21 surrounds the member 17 and has a flange portion 22 for cooperation with the flange portion 23 on the member 17. The member l21 also has anl'interiorly screw-threaded portion 24 for cooperation with .an exteriorly screw-threaded metal member or sleeve 25. A metal cap member 27 for cooperation with the screw threaded s sleeve 24 is also provided for mounting on the connector when the latter is not'in use. An insulating plug member 29 is ada ted to substantially ll a ta ered relatively eep socket space in the bo y 15. when the connector is not in use to prevent flashover to the adjacent grounded metal parts associated 'with the structures.

In operation, when it is-desired to conand the socket terminal 16 of the connector 10 toa, cooperating connector 32, the cap member 27 and the plug member 29'are removed and the cooperating terminal member placed in position where-l ina conducting portion occupies an opening 80 in the socket member 16.

In the above described structure, the lead 12l and the socket 16 are thoroughly insulated from the outer metal parts 17, 21, 25 and 27 which are grounded to the tubular portion S.

Further, since the socket portion 16 is dis osed deeply in the tapered insulating soc et member 15, there is ample distance to ground and danger to the operator by effecting accidental contact between the socket 16 and the grounded parts is precluded. `Also, since the lead 12 is brought out at a position beneath the shield 4, the latter may-be of its usual standard construction, without providing a .tap opening therein or o'therwise interfering with its s ordinary function. While I have shown and described a par- -the tap lead 12 is exa lateral or radial` a portion of a a tapered- V maaar? ticular form of my invention,I changes may. be effective therein without departing from forth in the spirit land scope thereof as set the appended claim.

I claim as my invention:

The combination with ing including conducting cylinders of different lengths, and a dielectric tube enclosing a portion thereof, of a tap lead extending` from an intermediate conducting cylinder adjacent to an end thereof at a osition between the ends of the tube and a ong shorter outerv conducting c linder of, thebushing in insulated relation thereto within the tube to a position beyond 'one end of the tube.

In testimony whereof, I have hereunto subscribed by name this 4th day of February 1929. l

GORDON A.. BURR.

a condenser bush- 

